{"instruction": "You are an expert in relationship extraction. Please extract relationship triples that match the schema definition from the input. Return an empty list for relationships that do not exist. Please respond in the format of a JSON string.", "schema": ["member collection", "entity origin", "else"], "input": "the second biggest factor affecting the sound produced by a drum is the tension at which the drum head is held against the shell of the drum ."}
{"member collection": [], "entity origin": [], "else": []}